Polar code combined encoding and decoding method

Abstract

The invention discloses a polar code combined encoding and decoding method. The encoding method comprises the following steps: S11, setting channel capacity; S12, selecting channels, and arranging thechannel capacities from high to low; S13, arranging the information sequence at the foremost position, carrying out odd-even check, and checking the information sequence; S14, performing cyclic redundancy check to obtain a cyclic redundancy check result, and connecting the check results of which the information sequence is in front, the enhanced parity check result is behind the information sequence and the final cyclic redundancy check result together to serve as a transmission sequence; and S15, after polar code encoding is carried out, transmitting the generated code words. The invention provides an enhanced parity check and CRC (cyclic redundancy check)-assisted polar code encoding and decoding method, which is more reliable in data and low in bit error rate.

Description

technical field [0001] The invention belongs to the field of communication, and relates to a polar code combined encoding and decoding method. Background technique [0002] Channel coding is mainly to add redundancy to the transmitted information, increase the anti-interference ability of the information, and improve the reliability of information transmission. In the process of information transmission, due to the interference of noise, the reliability of information transmission is low. Shannon once expounded a theory: Assuming a noisy channel, the channel capacity is C, and the information is transmitted at the speed R, when R<C, then there is a coding technique that makes the error received by the receiving end reach any small value, it is theoretically possible to achieve error-free transmission. [0003] Polar code is a channel coding method proposed by E.Arikan. It has been proved theoretically that polar codes can reach the Shannon limit, thus attracting the at...

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